8 books • 2 series
From the 500s Bce to the 200s Ce: Pythagoras to Nagarjuna (History's Most Influential Philosophers)
From the Mid-1900s to the Present: Hannah Arendt to Peter Singer (History's Most Influential Philosophers)
From the 200s CE to the Early 1300s: Plotinus to John Duns Scotus (History's Most Influential Philosophers)
From the Mid-1300s to the Mid-1700s: William of Ockham to Montesquieu (History's Most Influential Philosophers)
From the Mid-1700s to the Late 1800s: David Hume to Friedrich Nietzsche (History's Most Influential Philosophers)
From the Late 1800s to the Mid-1900s: Gottlob Frege to Jean-Paul Sartre (History's Most Influential Philosophers)